CPP Balagyruswamy : Answers

CHAPTER ONE

Program

           

main( )                                                                    

           {

/*…………printing begins………………*/ 

                printf(“I see, I remember”);

           /*………………printing ends…………………*/

           }

                       

Addition of Two Numbers

Program

/* Programm ADDITION                                line-1  */

/* Written by EBG                                   line-2  */

main()                                           /* line-3  */

{                                                /* line-4  */

           int   number;                          /* line-5  */

           float amount;                          /* line-6  */

                                                 /* line-7  */

           number = 100;                          /* line-8  */

                                                 /* line-9  */

           amount = 30.75 + 75.35;                /* line-10 */

           printf(“%d\n”,number);                 /* line-11 */

           printf(“%5.2f”,amount);                /* line-12 */

}                                                /* line-13 */

 INVESTMENT PROBLEM

Program

/*--------------------- INVESTMENT PROBLEM --------------------*/

#define PERIOD   10

#define PRINCIPAL 5000.00

/*-------------------- MAIN PROGRAM BEGINS --------------------*/

main()

{ /*------------------- DECLARATION STATEMENTS ----------------*/

     int year;

     float amount, value, inrate;

/*------------------- ASSIGNMENT STATEMENTS -------------------*/

     amount = PRINCIPAL;

     inrate =  0.11;

     year  = 0;

/*------------------ COMPUTATION STATEMENTS -------------------*/

/*--------------- COMPUTATION USING While LOOP ----------------*/

     while(year <= PERIOD)

     {     printf(“%2d          %8.2f\n”,year, amount);

           value =   amount + inrate * amount;

           year      =    year + 1;

           amount         =    value;

     }

/*----------------------- while LOOP ENDS ---------------------*/

}

/*------------------------ PROGRAM ENDS -----------------------*/

 

 

PROGRAM USING FUNCTION

Program

/*------------------- PROGRAM USING FUNCTION ------------------*/

int mul (int a, int b);      /*------- DECLARATION ------------*/        

/*-------------------- MAIN PROGRAM BEGINS --------------------*/

main ()

{

     int a, b, c;

     a = 5;

     b = 10;

     c = mul (a,b);

     printf (“multiplication of %d and %d is %d”,a,b,c);

}

/* ----------------    MAIN PROGRAM ENDS

                  MUL() FUNCTION STARTS -----------------*/

int mul (int x, int y)

int p;

p = x*y;

     {

return(p);

     }

/* -------------------- MUL () FUNCTION ENDS ------------------*/

PROGRAM USING COSINE FUNCTION

Program

/*--------------- PROGRAM USING COSINE FUNCTION -------------- */

 #include

 #define   PI      3.1416

 #define   MAX     180

 main ( )

 {

     int angle;

     float x,y;

    

     angle = 0;

     printf(“        Angle     Cos(angle)\n\n”);

     while(angle  <= MAX)

{

           x = (PI/MAX)*angle;

           y = cos(x);

           printf(“%15d %13.4f\n”, angle, y);

           angle = angle + 10;

     }

 }